CommunityJev Media & Talks
Jev: System One model
ZAUEY on a model that picks from options you define and returns a probability, and why many questions on one state stay cheap.
- Format
- Video
- Published by
- Community
- Author
- ZAUEY (Claire Zau)
- Last verified
- Sep 2026
Works forJev for Classification
Used inJev for Software & DevTools
Highlights
- Describes Jev as picking from answer options you define and returning a probability for each.
- The description says 20 questions cost about the same as one, because the state is read in a single pass.
- It prices input at $42 per billion tokens and output at zero.
Watch out
The price and the 20-question claim are the video description restating vendor pricing. Not investment advice, as the description notes.
Questions about this entry
Short answers drawn from the linked project or page.
Because the state is read once. The claim is that Jev scores all of the options you defined against a single pass over the input, so extra questions over the same state add options rather than another read. That is the pricing model, not a benchmark result.
It is vendor list pricing restated in the description, and the entry flags it as exactly that. Free output makes sense for a model emitting option keys and probabilities rather than prose, but nothing here verifies the rate or how an input token is counted.
Unaddressed. The capture has no transcript and no table, so the case that worries you — many questions multiplied by long option lists, where the bill scales with options times state — is not something this entry can speak to. Check the vendor's own figures.
The description sells typed options plus a probability per option, with no output tokens to parse and no schema errors to handle. Whether that beats a small model pinned to an enum is a comparison this capture does not make.
ZAUEY (Claire Zau) published it, describing Jev as picking from answer options you define and returning a probability for each.
$42 per billion input tokens, with output priced at zero. The entry records that as the description restating vendor pricing.
That it is not investment advice, noted alongside the price and the twenty-questions claim.
Reactions & coverage
Posts, threads, and videos about this entry from around the web.
YouTube: ZAUEY on a model that cannot write, and why twenty questions cost about the same as one.
Hacker News: Simon Willison's overview of Noul, Choice, and Score, and where a decision model fits.
benwerd53 pointsJev introduces a new shape of LLMRead the thread on Hacker NewsHacker News: swyx posts the Latent Space interview with Diogo Almeida.
swyx4 pointsJev: System One Models for Prod, Not God – With Diogo Almeida, CEO, TypeSafe AIRead the thread on Hacker NewsX: Diogo Almeida in five minutes
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